Note that the rom images are copyright HP. HP does however
since they have stopped the production allow the download of
those images.

After installation of the rom images you can just start
the hp48 emulator (the file x48 in the bin directory).

Documentation

The best is of course if you have already a HP48 and you just
use this emulator to have it also available on the PC. In this
case you will have already the handbooks from HP. The emulator
runs the original software and has therefore the exact same
functions as the real HP. Eric Rechlin from hpcalc.org has
scanned in a HP48G handbook: